Table 4 The incidence and relative risk (RR) for LBW and SGA infants based on maternal serum Zn level in the first trimester.

From: Maternal zinc deficiency during pregnancy elevates the risks of fetal growth restriction: a population-based birth cohort study

 

Maternal serum Zn level a

P

 

Deficiency (n = 31)

Sufficiency (n = 627)

LBW

 Number of LBW

2

16

 

 Incidence (%)

6.5

2.6

0.462

 Univariate RR (95%CI)

2.63 (0.58, 12.00)

1.00

0.211

 Adjusted RR (95%CI)b

2.64 (0.58, 12.05)

1.00

0.211

SGA

 Number of SGA

7

52

 

 Incidence (%)

22.6

8.3

0.007

 Univariate RR (95%CI)

3.23 (1.33, 7.84)

1.00

0.009

 Adjusted RR (95%CI)b

3.12 (1.27, 7.66)

1.00

0.013

  1. aDeficiency for serum zinc < 56 μg/dL and sufficiency for serum zinc ≥ 56 μg/dL.
  2. bAdjusted for pre-pregnancy BMI, maternal age and monthly income per person.
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